Friends and former Guns N' Roses band mates Slash and Steven Adler now have another thing in common - a restraining order against Lisa Jill Martin-Cahn.

Adler, the band's drummer from 1985-1990, alleges that the Oregon woman has hired at least three private investigators since 2008 to hunt him down.

According to Steven, this sketchiness was all done "under the ruse" that they were long lost lovers who met back in the early 90's. In rehab, natch.

Adler's documents, filed in L.A. County, say police who visited Cahn at her Oregon home last month found "unopened boxes of house ware items which Cahn stated [were] wedding presents for [her and Steven Adler's] upcoming marriage."

That's not weird or anything.

Former Guns N' Roses rockers Steven Adler, left, and Slash.

As for Slash, he claims Cahn contacted him and his family - including his mother-in-law - by phone and letter in desperate attempts to get in touch with Adler.